Operant conditioning chamber

From Academic Kids

An operant conditioning chamber (sometimes called a Skinner box after B. F. Skinner, its inventor) is an experimental apparatus used by psychologists to study operant conditioning in animals. The structure forming the shell of a chamber is a three-dimensional box large enough to easily accommodate the organism (rat, pigeon, monkey, etc) serving as the subject in the research. Conditioning chambers have at least one operandum (or "manipulandum") that can automatically detect the occurrence of a behavioral response or action. Typical operanda for monkeys and rats are "response levers"; if the subject presses the lever, the opposite end moves and closes a switch that is monitored by a computer or other programmed device. Typical operanda for pigeons and other birds are "response keys" with a switch that closes if the bird pecks at the key with sufficient force. The other minimal requirement of a conditioning chamber is that it have a means of delivering a primary reinforcer or unconditioned stimulus like food or water.

With such a simple configuration, one operandum and one feeder, it is possible to investigate uncountable psychological phenomena. Modern conditioning chambers typically have many operanda, like many response levers, two or more feeders, and a variety of devices capable of generating stimuli (lights, sounds, chords, figures, drawings, etc.) in the chamber.

Although commonly referred to as operant conditioning chambers, these apparatuses are also used to study classical conditioning--especially in pigeons (c.f., autoshaping).

See Also

de:Skinner-Box fr:Bote de Skinner

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